Java Programming Tutorials

Java programming tutorials with many code examples!

Java Util Map getOrDefault

java.util.Map.getOrDefault(key, defaultValue)

The method Map.getOrDefault(key, defaultValue) returns mapped value for the given key or defaultValue if there is no such mapping.

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Java Util Map forEach(BiConsumer)

java.util.Map.forEach(BiConsumer)

The method Map.forEach(BiConsumer) performs the given action for each entry of the map until all are processed or exception is thrown.

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Java Util Map computeIfPresent(Key,BiFunction)

java.util.Map.computeIfPresent(Key, BiFunction)

The method Map.computeIfPresent(Key, BiFunction) computes a new mapping for the given key and its current mapping value if the value exists and is not null.

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Java Util Map computeIfAbsent(key,Function)

java.util.Map.computeIfAbsent(key, Function)

The method Map.computeIfAbsent(key, Function) computes the new value and associates it with the key if there is no mapping for the given key or the mapping is null. Returns the new value associated with the key.

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Java Time Clock tick(Clock,Duration)

java.time.Clock.tick(Clock baseClock, Duration duration)

The method Clock.tick(Clock, Duration) returns a clock that will return instants from given baseClock truncated to given duration.

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Java Time Clock systemUTC

java.time.Clock.systemUTC()

The method Clock.systemUTC() returns a clock that will use the best available system clock to convert instant into date and time using UTC time-zone.

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Java Time Clock systemDefaultZone

java.time.Clock.systemDefaultZone()

The method Clock.systemDefaultZone() returns a clock that will use the best available system clock to convert instant into date and time using default time-zone.

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Java Time Clock offset(Clock,Duration)

java.time.Clock.offset(Clock,Duration)

The method java.time.Clock.offset(Clock,Duration) returns a wrapper around given Clock with the specified Duration added. This clock implementation allows easily to jump into the past and future.

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